<!DOCTYPE html>
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
	<style type="text/css">
	body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}
	#allmap {position: relative;}
	#tools {position: absolute;left:0;top:0;z-index: 1000;}
	</style>
	<script type="text/javascript" src="https://api.map.baidu.com/api?type=webgl&v=1.0&ak=9Hl6gsN9gRvke7QGtEb7R6ZikNDGhakD"></script>
	<script type="text/javascript" src="https://api.map.baidu.com/library/TrackAnimation/src/TrackAnimation_min.js"></script>
	<title>地图展示</title>
</head>
<body>
	<div id="allmap"></div>
	<div id="tools">
		<button id="start">播放动画</button>
		<button id="end">停止播放</button>
	</div>
</body>
</html>
<script type="text/javascript">
  var bmap = new BMapGL.Map("allmap");                          // 创建Map实例
	bmap.centerAndZoom(new BMapGL.Point(116.297611, 40.047363), 17);    // 初始化地图，设置中心点坐标和地图级别
	bmap.enableScrollWheelZoom(true);                             // 开启鼠标滚轮缩放
	var path = [{
    'lng': 116.297611,
    'lat': 40.047363
	}, {
		'lng': 116.302839,
		'lat': 40.048219
	}, {
		'lng': 116.308301,
		'lat': 40.050566
	}, {
		'lng': 116.305732,
		'lat': 40.054957
	}, {
		'lng': 116.304754,
		'lat': 40.057953
	}, {
		'lng': 116.306487,
		'lat': 40.058312
	}, {
		'lng': 116.307223,
		'lat': 40.056379
	}];
	var point = [];
	for (var i = 0; i < path.length; i++) {
		point.push(new BMapGL.Point(path[i].lng, path[i].lat));
	}
	var pl = new BMapGL.Polyline(point);
	var trackAni = new BMapGLLib.TrackAnimation(bmap, pl, {
    overallView: true, // 动画完成后自动调整视野到总览
    tilt: 30,          // 轨迹播放的角度，默认为55
    duration: 20000,   // 动画持续时长，默认为10000，单位ms
    delay: 3000        // 动画开始的延迟，默认0，单位ms
	});
	document.getElementById('start').addEventListener('click', function() {
		trackAni.start();
	});
	document.getElementById('end').addEventListener('click', function() {
		trackAni.cancel();         // 强制停止动画
	});
</script>
